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Blood Microrheology Viscosity Factors In Blood Flow Ischaemia And Thrombosis
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Book Synopsis Blood Microrheology: Viscosity Factors in Blood Flow, Ischaemia, and Thrombosis by : Leopold Dintenfass
Download or read book Blood Microrheology: Viscosity Factors in Blood Flow, Ischaemia, and Thrombosis written by Leopold Dintenfass and published by Butterworths. This book was released on 1971 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Blood Viscosity written by L. Dintenfass and published by Springer Science & Business Media. This book was released on 1985-03-31 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Clinical Aspects of Blood Viscosity and Cell Deformability by : G. D. O. Lowe
Download or read book Clinical Aspects of Blood Viscosity and Cell Deformability written by G. D. O. Lowe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: After many years of relative neglect, the importance of study of factors governing blood flow has at last achieved recognition; in this volume are documented many of the techniques, and the basic scientific and clinical observations, which have helped to open up understanding of this highly important aspect of human physiology and pathology in recent years. The text is logically divided into five sections beginning with blood cell deformability, then moving on to theoretical consideration of blood rheology, followed by accounts of the interrelationships between rheology, blood flow and vascular occlusion. The final two sections deal with blood rheology in clinical practice and therapeutic aspects of the study of blood flow. As regards blood cell deformability (Section A), the basic problem is set out by Kiesewetter and colleagues in the first paragraph of chapter 1 (p. 3), in which they point out that whereas human erythrocytes at rest have a diameter of approxi mately 7. 5 /-tm, nutritive capillaries have diameters ranging from 3-5 /-tm, and chapters in section A give an account of the ways in which the red cell can undergo deformation to permit capillary perfusion and the maintenance of the microcirculation.
Book Synopsis Blood Viscosity by : Gregory D. Sloop
Download or read book Blood Viscosity written by Gregory D. Sloop and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The impact of blood viscosity on health and disease has been neglected, even though viscosity is a fundamental property of any fluid. It is inversely proportional to flow, so increased blood viscosity predisposes to thrombosis. Blood viscosity is directly related to systemic vascular resistance, and so blood viscosity affects blood pressure. Blood viscosity is inversely proportional to perfusion, and increased viscosity adversely affects the performance of all organs. By viewing them through the perspective of viscosity, this book provides fresh insight into atherosclerotic cardiovascular disease, hypertension, metabolic syndrome, sepsis, hemolytic anemias, anemia of chronic disease, and aging.
Book Synopsis Blood Viscosity and Shock by : H. Goslinga
Download or read book Blood Viscosity and Shock written by H. Goslinga and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hemodynamic significance of the flow properties of blood was put into perspective only during the past decade. Advances in modern technologies today allow the quantitative analy sis of the fluidity of blood and its components under conditions approximating the flow in vivo, particularly those in the microcirculation. The hematocrit is the most important of the determinants of blood fluidity (reciprocal value of blood viscosity); acute increases in the hematocrit exert deleterious effects on circulation and oxygen transport owing to impaired fluidity of blood. High viscosity of plasma due to hyper- or dysproteinemias initiates the microcirculatory dysfunctions in hyperviscosity syndromes. Furthermore, the fluidity or deformability of red cells might be critically diminished and therefore cause redistribution of blood elements and adversely affect the resistance to flow within the microvessels. In low flow states blood fluidity most likely becomes the key determinant for microvessel perfu sion, overriding the neural and local metabolic control mechanisms operative at physiological conditions to adjust blood supply to tissue demand. Microcirculatory disturbances are there fore encountered whenever driving pressures are reduced, as in shock or hypotension, and distal to stenoses of macrovessels, but also in hemoconcentration due to plasma volume con traction, polycythemia, leukemia, and dysproteinemia. Based on experimental studies exploring the possibilities and limitations, with regard to improving the fluidity of blood by reducing the hematocrit, the concept of intentional hemo dilution has been introduced to clinical medicine.
Book Synopsis Hemodynamical Flows by : Giovanni P. Galdi
Download or read book Hemodynamical Flows written by Giovanni P. Galdi and published by Springer Science & Business Media. This book was released on 2008-03-18 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book surveys research results on the physical and mathematical modeling, as well as the numerical simulation of complex fluid and structural mechanical processes occurring in the human blood circulation system. Topics treated include continuum mechanical description; choice of suitable liquid and wall models; mathematical analysis of coupled models; numerical methods for flow simulation; parameter identification and model calibration; fluid-solid interaction; mathematical analysis of piping systems; particle transport in channels and pipes; artificial boundary conditions, and many more. The book was developed from lectures presented by the authors at the Oberwolfach Research Institute (MFO), in Oberwolfach-Walke, Germany, November, 2005.
Book Synopsis Heart Perfusion, Energetics, and Ischemia by : Leopold Dintenfass
Download or read book Heart Perfusion, Energetics, and Ischemia written by Leopold Dintenfass and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal purpose of a NATO (North Atlantic Treaty Organization) Advanced Research Workshop, a part of the NATO Advanced Study Institutes Programme, is to: (a) exchange thoughts at the frontiers of knowledge or at the frontiers of two (or more) fields or sectors; (b) review and assess the state of the art; (c) formulate recommendations for future research directions; (d) formulate plans for large international scientific experiments. The aim of the ARW on "Microvascular, rheological, metabolic and heat-transfer aspects of the heart: relation to ischaemia and thrombosis", convened in Chateau de Bonas, July 4-11, 1982, was to describe functions and performance of the heart in an interdisciplin ary effort, involving cardiologists, pathologists, biochemists, haemorheologists, physiologists, pharmacologists and bioengineers; to explore interactions between such subfields as blood rheology, micro circulation and ischaemia of the myocardium, heat transfer, heat work and performance as a pump, effect of -metabolites and ion transfer, mechanism of sudden death, protein synthesis and protein molecular transformations. One of the purposes of the Convenor was to relate clinical haemorheology to the heart energetics and heart metabolism. This was only partly established, as difficulties of communications between different fields, difficulties of semantics and of specialized out looks could not be overcome within a -few days. Nevertheless, a gate was opened for communications interchange in the future. There was even a problem within each specialty, and as is rather common, quite diverse views have been expressed. This, of course, is quite normal in the progress of science.
Book Synopsis Theoretical and Applied Mechanics by : E. Becker
Download or read book Theoretical and Applied Mechanics written by E. Becker and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Thirteenth International Congress of Theoretical and Applied Mechanics was held in Moscow from Monday, 21 August, to Saturday, 26 August 1972. About 2500 participants from 37 countries all over the world attended the congress that was convened by the Congress Committee of the International Union of Theoretical and Applied Mechanics. The local or ganization lay in the hands of the Organizing Committee, established by the USSR National Committee on Theoretical and Applied Mechanics. The USSR Academy of Sciences rendered partial financial help to the organization of th8 congress. The Organizing Committee was assisted by the Institute of Problems of Mechanics of the USSR Academy of Sciences, by the Research Institute for Mechanics of Moscow University, and by the Computing Center and the Institute of Applied Mathematics of the USSR Academy of Sciences. The Bureau of IUTAM had allocated a considerable sum for partial financial support of young scientists attending the congress. The Thirteenth Congress was officially opened on Monday morning at the Kremlin Palace of Congresses by Academician N. 1. Muskhelishvili, President of the Congress, and Professor W. T. Koiter, President of IUTAM. Greeting addresses were offered by: Mr. K. N. Rudnev, Minister, member of the Council of Ministers of the USSR, Academician M. V. Keldysh, President of the USSR Academy of Sciences, Mr. L. N.
Book Synopsis Clinical Blood Rheology by : Gordon D.O. Lowe
Download or read book Clinical Blood Rheology written by Gordon D.O. Lowe and published by CRC Press. This book was released on 2019-06-04 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published in 1988: Study of blood flow properties (rheology) has attracted growing interest from clinicians in recent years. A United Kingdom meeting and a European meeting in 1979 resulted in previous publications summarizing the literature up to that time.
Download or read book Microcirculation written by John Grayson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recogmuon recogmtIon of the microcirculation as an ideal interdisciplinary meeting place for the life sciences is really a postwar phenomenon. The European and the American Societies more than any other organizations launched the idea, and the success of the European Society's International Meetings gave impetus to a growth of interest from a handful of specialists to the wide interdisciplinary study which microcirculation now represents. The meeting held in Canada in June 1975 was, however, the first truly international meeting devoted to the microcirculation. It, too, was a success from every point of view, and the exchange of knowledge and new ideas was rewarding. It is our present hope that the tradition of European meetings with their characteristic European flavor will continue, but larded by larger, international congresses conceived on a worldwide basis. For the present conference we were fortunate in the presence of Dr. B. Zweifach. He was once referred to as the "father of the microcircula tion." This claim, unfortunately, I cannot accept. That honor probably belongs to Harvey, who by one of the most brilliant strokes of inductive reasoning in medical history inferred the existence of capillaries though he could not see them. Ben Zweifach's role was rather that of the midwife, presiding at the birth rather than the conception. The baby he delivered long years ago has since thriven lustily and its growth is in no small measure due to the continuing zeal of Zweifach and his associates.
Book Synopsis Arteries and Arterial Blood Flow by : C. M. Rodkiewicz
Download or read book Arteries and Arterial Blood Flow written by C. M. Rodkiewicz and published by Springer. This book was released on 2014-05-04 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Hemostasis and Thrombosis by : A. Cajozzo
Download or read book Advances in Hemostasis and Thrombosis written by A. Cajozzo and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: A greater knowledge of the basic molecular mechanisms which regulate platelet function, coagulation, the fibrinolytic system and their interaction with the vessel wall has allowed a better understanding of the numerous aspects involved in the pathogenesis of thrombosis and the regulation of hemostasis. Thrombosis represents today one of the causes of death in the Western hemisphere. Arterial thrombosis may lead to myocardial infarction, cerebral and peripheral vascular diseases. Venous thrombosis, on the other hand, is a complication of heart disease, surgery, extensive trauma, several obstetric pathologies, and may, at times, develop in apparently healthy subjects. These complex problems are dealt with within the content of "Advances in Hemostasis and Thrombosis." The present papers contain up-to-date information on hemostasis, the role of prostaglandins, fibrinolytic coagulation, rheology, and modern therapeutic approaches along with their clinical application. This book, therefore, offers the reader the opportunity to profit from a rare encounter, an interdisciplinary cooperation, with scientific contributions from numerous countries.
Download or read book Clinical Hemorheology written by S. Chien and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: The task the editors have set themselves is to survey the field of clinical hemorheology from basic principles to up-to-date research. It is only in a new science like this that it is possible to span the whole field in a book of this size. Hemorheology, as a new approach to the study and management of a wide range of circulatory diseases, is now beginning to appear with increasing frequency in general as well as specialized medical journals. Hemorheology is also just beginning to creep into the undergraduate medical curriculum. Therefore, the majority of graduate doctors are unequipped to assess the place of hemorheology in the overall framework of circulatory physiology and pathology or to assess its relevance to their everyday practice. It is hoped that this book will fill this gap. The approach of the book is interdisciplinary. The first part deals with basic principles of blood flow, circulation and hemorheology. It has been written with the general doctor in mind, who has no special knowledge of hemodynamics and rheological concepts, terminology or methodology. To maintain the emphasis on practical clinical applications, all the chapters in the second part of the book have been written by clinical specialists practicing in the individual areas of disease. The book is so designed that clinicians may be able to read the relevant chapters in the second part of the book in isolation, using the basic science aspects contained in the first part of the book as reference chapters.
Download or read book Hemomath written by Antonio Fasano and published by Springer. This book was released on 2017-10-30 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book illustrates applications of mathematics to various processes (physiological or artificial) involving flowing blood, including hemorheology, microcirculation, coagulation, kidney filtration and dialysis, offering a historical overview of each topic. Mathematical models are used to simulate processes normally occurring in flowing blood and to predict the effects of dysfunctions (e.g. bleeding disorders, renal failure), as well as the effects of therapies with an eye to improving treatments. Most of the models have a completely new approach that makes patient-specific simulations possible. The book is mainly intended for mathematicians interested in medical applications, but it is also useful for clinicians such as hematologists, nephrologists, cardio-surgeons, and bioengineers. Some parts require no specific knowledge of mathematics. The book is a valuable addition to mathematics, medical, biology, and bioengineering libraries.
Book Synopsis Biofluid Mechanics · 2 by : D. J. Schneck
Download or read book Biofluid Mechanics · 2 written by D. J. Schneck and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Department of Engineering Science and Hechanics at Virginia Polytechnic Institute and State University spon sored the First Mid-Atlantic Conference on Bio-Fluid Mechanics, which was held in Blacksburg, Virginia during the period 9-11 August 1978. Some 40 life-scientists, engineers, physicians and others who share a common interest in the advancement of basic and applied knowledge in bio fluid mechanics gathered at the Donaldson Brown Center for Continuing Education to hear 25 papers presented in seven technical sessions. At the conclusion of the conference, those present decided unanimously that its success warranted having at least one more -- and that it was conceptually a sound idea to plan it on a biennial basis for late spring. Hence, the second Mid-Atlantic Conference on Bio Fluid Mechanics took place at Virginia Tech on May 4-6, 1980. This volume documents the Proceedings of the second conference. It contains full texts of 23 contributed papers, 2 guest lectures and 1 invited seminar. The papers are gr9uped according to subject matter, beginning with 3 in the area of respiration, followed by 1 in kidney dialysis, 1 in reproduction, 1 in joint lubrication, 1 in prosthetic fluidics, 2 in zoology, and ending with 14 in the general field of cardiovascular dynamics. Of the latter, 5 deal with the subject of heart valves, 2 concern themselves with the microcirculation, 6 address vascular system hemodynamics and 1 covers some aspects of blood rheology.
Download or read book Red Cell Rheology written by M. Bessis and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hemolysis during filtration through micropores studied by Chien et al. [I] showed a dependence on pressure gradient and pore diameter that, at the time of publication, did not permit an easy interpretation of the hemolytic mechanism. Acting on the assumption that thresholds of hemolysis are easier to correlate with physical forces than extents of hemolysis, we performed a series of experi ments repeating some of the conditions reported in [I] and then focusing on low L1P in order to define better the thresholds of hemolysis for several pore sizes. Employing a model of a deformed red cell shape at the pore entrance (based on micropipette observations) we related the force field in the fluid to a biaxial tension in the membrane. The threshold for lysis correlated with a membrane tension of 30 dynes/cm. This quantity is in agreement with lysis data from a number of other investigators employing a variety of mechanisms for introduc ing membrane tension. The sequence of events represented here is: a. Fluid forces and pressure gradients deform the cell into a new, elongated shape. b. Extent of deformation becomes limited by the resistance of the cell mem brane to undergo an increase in area. c. Fluid forces and pressure gradients acting on the deformed cell membrane cause an increase in biaxial tension in the membrane. d. When the strain caused by this tension causes pores to open in the membrane, the threshold for hemolysis has been reached [2].
Download or read book Rheology written by Giovanni Astarita and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 749 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the VIIth International Congress on Rheology, which was held in Goteborg in 1976, Proceedings were for the first time printed in advance and distributed to all participants at the time of the Congress. Although of course we Italians would be foolish to even try to emulate our Swedish friends as far as efficiency of organization is concerned, we decided at the very beginning that, as far as the Proceedings were concerned, the VIIIth International Congress on Rheology in Naples would follow the standards of time liness set by the Swedish Society of Rheology. This book is the result we have obtained. We wish to acknowledge the cooperation of Plenum Press in producing it within the very tight time schedule available. Every four years, the International Congress on Rheology represents the focal point where all rheologists meet, and the state of the art is brought up to date for everybody interested; the Proceedings represent the written record of these milestones of scientific progress in rheology. We have tried to make use of the traditions of having invited lectures, and of leaving to the organizing committee the freedom to choose the lecturers as they see fit, in order to collect a group of invited lectures which gives as broad as possible a landscape of the state of the art in every relevant area of rheology. The seventeen invited lectures are collected in the first volume of the proceedings.
